<template>
  <div>
        <button @click="isShow = !isShow">显示/隐藏</button>
        <transition-group name="hello" appear>
            <h2 v-show="isShow" key="1">北极星</h2>
            <h2 v-show="!isShow" key="2">联盟</h2>
        </transition-group>
  </div>
</template>
<script>
export default {
    data(){
        return{
            isShow: true
        }
    }
}
</script>
<style scoped>
    h2{
        background-color: blue;
    }
    .hello-enter-active,.hello-leave-active{
        transition: 0.5s linear;
    }
    /* 进入的起点 离开的终点*/
    .hello-enter-from,.hello-leave-to{
        transform: translateX(-100%);
    }
    /* 进入的终点 离开的起点*/
    .hello-enter-to, .hello-leave-from{
        transform: translateX(0);
    }
</style>